Effects of pretreatment on physical and ion exchange properties of natural clinoptilolite

V. J. Inglezakis, C. D. Papadeas, M. D. Loizidou, H. P. Grigoropoulou

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

Four pretreatment procedures have been applied to natural clinoptilolite to establish the influence of the pretreatment process on the properties of the material under investigation. Modification of material properties is imposed for its use in wastewater treatment via ion exchange processes. Batch pretreatment procedures as well as continuous flow column have been studied by using sodium chloride, sodium hydroxide and nitric acid solutions in deionized water. Measurements of the effective capacity, the diffusion coefficient in the solid state and examination of the crystal structure have been employed to assess the effect of each specific pretreatment on the material under test. The effective capacity is improved in all cases, by a factor of 2.4 to 3.6, while the diffusion coefficient values depend strongly on the type of pretreatment used and fall in the range of 0.03- 1.37x10-8 cm2s-2 at 20°C. The crystal structure remains unaltered as evidenced by XRD measurements.

Original languageEnglish
Pages (from-to)75-82
Number of pages8
JournalEnvironmental Technology
Volume22
Issue number1
Publication statusPublished - 2001
Externally publishedYes

Fingerprint

clinoptilolite
crystal structure
ion exchange
Ion exchange
Crystal structure
Nitric Acid
Sodium Hydroxide
Deionized water
sodium chloride
nitric acid
Sodium Chloride
Wastewater treatment
hydroxide
Materials properties
X-ray diffraction
sodium
water
material
effect
test

Keywords

  • Diffusion coefficients
  • Effective capacity
  • Ion exchange
  • Zeolities

ASJC Scopus subject areas

  • Environmental Science(all)
  • Environmental Chemistry

Cite this

Effects of pretreatment on physical and ion exchange properties of natural clinoptilolite. / Inglezakis, V. J.; Papadeas, C. D.; Loizidou, M. D.; Grigoropoulou, H. P.

In: Environmental Technology, Vol. 22, No. 1, 2001, p. 75-82.

Research output: Contribution to journalArticle

Inglezakis, VJ, Papadeas, CD, Loizidou, MD & Grigoropoulou, HP 2001, 'Effects of pretreatment on physical and ion exchange properties of natural clinoptilolite', Environmental Technology, vol. 22, no. 1, pp. 75-82.
Inglezakis, V. J. ; Papadeas, C. D. ; Loizidou, M. D. ; Grigoropoulou, H. P. / Effects of pretreatment on physical and ion exchange properties of natural clinoptilolite. In: Environmental Technology. 2001 ; Vol. 22, No. 1. pp. 75-82.
@article{b5251ea9960141b5ba2c14b8c83d78f3,
title = "Effects of pretreatment on physical and ion exchange properties of natural clinoptilolite",
abstract = "Four pretreatment procedures have been applied to natural clinoptilolite to establish the influence of the pretreatment process on the properties of the material under investigation. Modification of material properties is imposed for its use in wastewater treatment via ion exchange processes. Batch pretreatment procedures as well as continuous flow column have been studied by using sodium chloride, sodium hydroxide and nitric acid solutions in deionized water. Measurements of the effective capacity, the diffusion coefficient in the solid state and examination of the crystal structure have been employed to assess the effect of each specific pretreatment on the material under test. The effective capacity is improved in all cases, by a factor of 2.4 to 3.6, while the diffusion coefficient values depend strongly on the type of pretreatment used and fall in the range of 0.03- 1.37x10-8 cm2s-2 at 20°C. The crystal structure remains unaltered as evidenced by XRD measurements.",
keywords = "Diffusion coefficients, Effective capacity, Ion exchange, Zeolities",
author = "Inglezakis, {V. J.} and Papadeas, {C. D.} and Loizidou, {M. D.} and Grigoropoulou, {H. P.}",
year = "2001",
language = "English",
volume = "22",
pages = "75--82",
journal = "Environmental Technology (United Kingdom)",
issn = "0959-3330",
publisher = "Taylor and Francis",
number = "1",

}

TY - JOUR

T1 - Effects of pretreatment on physical and ion exchange properties of natural clinoptilolite

AU - Inglezakis, V. J.

AU - Papadeas, C. D.

AU - Loizidou, M. D.

AU - Grigoropoulou, H. P.

PY - 2001

Y1 - 2001

N2 - Four pretreatment procedures have been applied to natural clinoptilolite to establish the influence of the pretreatment process on the properties of the material under investigation. Modification of material properties is imposed for its use in wastewater treatment via ion exchange processes. Batch pretreatment procedures as well as continuous flow column have been studied by using sodium chloride, sodium hydroxide and nitric acid solutions in deionized water. Measurements of the effective capacity, the diffusion coefficient in the solid state and examination of the crystal structure have been employed to assess the effect of each specific pretreatment on the material under test. The effective capacity is improved in all cases, by a factor of 2.4 to 3.6, while the diffusion coefficient values depend strongly on the type of pretreatment used and fall in the range of 0.03- 1.37x10-8 cm2s-2 at 20°C. The crystal structure remains unaltered as evidenced by XRD measurements.

AB - Four pretreatment procedures have been applied to natural clinoptilolite to establish the influence of the pretreatment process on the properties of the material under investigation. Modification of material properties is imposed for its use in wastewater treatment via ion exchange processes. Batch pretreatment procedures as well as continuous flow column have been studied by using sodium chloride, sodium hydroxide and nitric acid solutions in deionized water. Measurements of the effective capacity, the diffusion coefficient in the solid state and examination of the crystal structure have been employed to assess the effect of each specific pretreatment on the material under test. The effective capacity is improved in all cases, by a factor of 2.4 to 3.6, while the diffusion coefficient values depend strongly on the type of pretreatment used and fall in the range of 0.03- 1.37x10-8 cm2s-2 at 20°C. The crystal structure remains unaltered as evidenced by XRD measurements.

KW - Diffusion coefficients

KW - Effective capacity

KW - Ion exchange

KW - Zeolities

UR - http://www.scopus.com/inward/record.url?scp=0035134944&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035134944&partnerID=8YFLogxK

M3 - Article

C2 - 11286059

AN - SCOPUS:0035134944

VL - 22

SP - 75

EP - 82

JO - Environmental Technology (United Kingdom)

JF - Environmental Technology (United Kingdom)

SN - 0959-3330

IS - 1

ER -